Ventilator.



. PATENTED N0v'.s,19o4.

D. ROBINSON. VBNTILATOR.

APPLICATION FILED MAR. 28, 1904.

N0 MODEL.

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Mz'izzesa'es:

UNITED STATES Tatented November 8 1904.

FFICE.

PATENT DUNCAN ROBINSON, OF BOSTON, MASSACHUSETTS.

VENTILATOR.

Application filed March 28. 1904- 1'0 all whom it may concern.-

Be it known that I, DUNCAN ROBINSON, of Boston, county of Suffolk, State of Wassachusetts, have invented an Improvement in Ventilators, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to ventilators, and is intended to improve the construction of the ventilator to the end that it may be easily and cheaply manufactured.

The ventilator comprises, essentially, a hollow spherical body having oppositely-disposed side openings, preferably circular in shape, a pipe to which said body is attached which projects up into said body, and weather guards or shields, also preferably circular in shape, suitably supported in front of said side openings, but sufficiently removed therefrom to provide ample exit passages between the guards or shields and the spherical body. Figure 1 shows in front elevation a ventilator embodying this invention. Fig. 2 is a side elevation of the ventilator shown in Fig. 1, and Fig. 3 is a vertical section of the ventilator shown in Fig. 1.

(4 represents a hollow spherical body, and Z) a pipe to which it is attached, said pipe projecting up into said body, as shown in Fig. 3. The spherical body is preferably integrally formed. The spherical body may be provided with a flange a, which embraces the pipe, and rivets may be employed for securing the parts together which pass through said flange and pipe, or said body'may be otherwise secured to said pipe. The hollow spherical body a has two oppositely-disposed side openings (5 a which are preferably made circular in shape, although not necessarily so, said openings serving as the exits from the spherical body, and, if desired, more than two openings may be provided. In front of each side opening a a weather guard or shield c is supported at a suitable distance from the body to provide a passage for the escape of the smoke, foul air, &c.

The weather guards or shields c are pref erably made circular in shape and as concavodated November 8, 1904. Serial No. 200,237. (No model.)

convex disksas, for instance, they may be struck up from sheet metalyet said guards or shields may be of any other suitable shape, and as a means of supporting them in vertical planes in front of said side openings a cross bar (Z passes diametrically through the hollow spherical body and through the pipe I), and said cross-bar projects from the opposite side openings (fisuitable distances to receive upon its projecting ends the two guards or shields 0. The cross-bar (Z is thus supported by the pipe. Asleeve d is placed upon each end of said cross-bar, which abuts against the pipe, and the guards or shields c are then placed on the projecting ends of said cross-bar against the outer ends of said sleeves, and the outer ends of the cross-bar are screw-threaded to receive nuts, which when placed thereon and turned up tightly will engage the guards or shields c and hold them tightly in position against the outer ends of the sleeves. The guards or shields are thereby securely held in place, although in lieu of this particular means of supporting the guards or shields c any other suitable means may be provided.

At the bottom of the hollow spherical body one or more small apertures 60 are provided for the escape of any water that may collect therein.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a ventilator, a hollow spherical body having oppositely-disposed circular side openings, a pipe to which it is attached, which projects up into said body, a cross-bar passing through said body, theends of which project from the side openings thereof and circular concavo-convex weather guards or shields supported by said cross-bar in front of said side openings, but sufficiently removed therefrom to provide exit-passages, substantially as described. 7

2. In a ventilator, a hollow spherical body having oppositely-disposed side openings, a pipe to which it is attached which projects up into said body, a cross-bar passing diametrically through said body and through said pipe, the ends of which project from said side openings, and weather guards or shields supported upon the projecting ends of said cross-bar, substantially as described.

3. In a ventilator, a hollow spherical body which bear against said sleeves, and means for holding said shields in place on the crossbar, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

DUN (JAN ROBIN SON.

Witnesses:

B. J. NOYES, H. B. DAVIS. 

